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Projects of NA 001-01-03 GA

DIN EN 61094-2/A1 2022-08-30 Electroacoustics - Measurement microphones - Part 2: Primary method for pressure calibration of laboratory standard microphones by the reciprocity technique (IEC 61094-2:2009/AMD1:2022); German and English version EN 61094-2:2009/A1:2022 More  Comment 
DIN EN 61252 2022-08-29 Electroacoustics - Specifications for personal sound exposure meters More  Comment